27 Miss. Code. R. 120-9.2
In computing any period of time prescribed or allowed by these rules, the day of the act or event from which the designated period of time begins to run shall not be included. The last day of the period so computed shall be included, unless it is a Saturday, Sunday, legal holiday or any other day the Administrative Office is in fact closed, in which event the period runs until the end of the next day that is not a Saturday, Sunday, legal holiday or other day the Administrative Office is closed. Intermediate Saturdays, Sundays, and legal Holidays shall be excluded in the computation when the period of time prescribed or allowed is less than ten (10) days. In the event any legal holiday falls on a Saturday or Sunday, the legal holiday will be observed as mandated by law.
27 Miss. Code. R. 120-9.2